Description

Compumedics, an Australian health technology firm that deals in sleep and neurological disorder diagnostics, has confirmed a ransomware attack that exposed the personal information of more than 318,000 people. The attack took place between February 15 and March 23, 2025, and was noticed on March 22. In a data security notice mailed to impacted customers, hackers breached systems and stolen files, including private patient information from almost a dozen U.S. healthcare providers that use Compumedics' services. Data stolen in the breach consists of names, birth dates, demographic data, medical histories, and, in a number of cases, Social Security numbers and health insurance information. Such a breach of data is particularly risky, especially among those whose information may be used for identity theft or insurance scams. The U.S. Department of Health and Human Services' breach tracker verified that Compumedics USA reported 318,150 individuals affected, ranking the incident as one of the more serious healthcare-related data breaches of the year. While Compumedics has not published technical details of the breach, a comparatively recently emerged ransomware operator called VanHelsing took credit for the attack on March 26. The group, briefly active in March 2025, included Compumedics among fewer than a dozen victims on its Tor leak site, which went quiet in early April. VanHelsing's short lifespan and targeted attacks indicate it was possibly an experimental or brief operation. Compumedics has probably hired cybersecurity professionals and is working with authorities, but as of yet has not released additional public information on remediation measures or if a ransom was paid.